Nature, Volume 84

amount appears applied Association August become British carried cause cent changes character College colour comet complete connection considerable contains course deal described determined direction discussion effect electric engineering evidence examination existence experiments fact feet further give given illustrated important increase Institute interesting iron issued July known Lake less light lines London material mathematical matter means measured meeting metal method nature nearly North observations obtained origin period photographs physical plant Pleistocene position possible practical present Price probably produced Prof published question received recent recorded reference regard relation represented rocks scientific shown Society South species suggested surface taken temperature theory tion University various volume whole